Mathematics – Stage 1 – Year A – Unit 9

This sample Stage 1 unit explores the big idea of combining and separating quantities.

Mathematics K-2 Syllabus © 2021 NSW Education Standards Authority (NESA) for and on behalf of the Crown in right of the State of New South Wales.

Students are provided with opportunities to:

  • represent combining situations in different ways through the use of gesture, enactment, drawings, numbers, and words
  • use symbols to describe mathematical quantities, actions, and relationships in efficient ways
  • understand that the order in which 2 quantities are combined does not change the result

Syllabus focus and content group

Representing whole numbers A – MAO-WM-01, MA1-RWN-01, MA1-RWN-02
  • Use counting sequences of ones with two-digit numbers and beyond
  • Continue and create number patterns
  • Represent numbers on a line
Combining and separating quantities A – MAO-WM-01, MA1-CSQ-01
  • Use advanced count-by-one strategies to solve addition and subtraction problems
  • Use flexible strategies to solve addition and subtraction problems
  • Represent equality
Combining and separating quantities B – MAO-WM-01, MA1-CSQ-01
  • Represent and reason about additive relations
  • Use knowledge of equality to solve related problems
Forming groups A – MAO-WM-01, MA1-FG-01
  • Count in multiples using rhythmic and skip counting
  • Model and use equal groups of objects to represent multiplication
Forming groups B – MAO-WM-01, MA1-FG-01
  • Represent and explain multiplication as the combining of equal groups
Non-spatial measure A– MAO-WM-01, MA1-NSM-01
  • Mass: Investigate mass using an equal-arm balance
Non-spatial measure B– MAO-WM-01, MA1-NSM-01
  • Mass: Compare the masses of objects using an equal-arm balance

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